https://aprsdroid.org/
APRSdroid - APRS for Android
APRS (Automatic Packet Reporting System) app for Android: find friends, send messages, locate repeaters
aprsdroidandroid
https://play.google.com/store/apps/details?id=org.aprsdroid.app
APRSdroid - APRS Client - Apps on Google Play
Amateur Radio app for APRS: Track friends, exchange messages, get tactical info.
client appson googleaprsdroidplay